newly acquired funds, Mouchout enlarged his invention's capacity, refined the reflector, redesigning it as a truncated cone, like a dish with slanted sides, to more accurately focus the sun's rays on the boiler. Mouchout also constructed a tracking mechanism that enabled the entire machine to follow the sun's altitude and azimuth, providing uninterrupted solar reception. After six years of work, Mouchout exhibited his new machine in the library courtyard of his Tours home in 1872, amazing spectators. One reporter described the reflector as an inverted "mammoth lamp shade...coated on the inside with very thin silver leaf" and the boiler sitting in the middle as an "enormous thimble" made of blackened copper and "covered with a glass bell."Anxious to put his invention to work, he connected the apparatus to a steam engine that powered a water pump. On what was deemed "an exceptionally hot day," the solar motor produced one-half horsepower. Mouchout reported the results and findings to the French Academy of Science. The government, eager to exploit the new invention to its fullest potential, decided that the most suitable venue for the new machine would be the tropical climes of the French protectorate of Algeria, a region blessed with almost constant sunshine and entirely dependent on coal, a prohibitively expensive commodity in the African region.Mouchout was quickly deployed to Algeria with ample funding to construct a large solar steam engine. He first decided to enlarge his invention's capacity yet again to 100 liters (70 for water and 30 for steam) and employ a multi-tubed boiler instead of the single cauldron. The boiler tubes had a better surface-area-to-water ratio, yielding more pressure and improved engine performance.In 1878, Mouchout exhibited the redesigned invention at the Paris Exposition. Perhaps to impress the audience or, more likely, his government backers, he coupled the steam engine to a refrigeration device. The stea...
